dual ported
A term used to describe memory integrated circuits which can be accessed
simultaneously via two independent address and data busses.
Dual ported memory is often used in video display hardware, especially in
conjunction with Video Random Access Memory (VRAM). The two ports allow the
video display hardware to read memory to display the contents on screen at the
same time as the CPU writes data to other areas of the same memory. In
single-ported memory these two processes cannot occur simultanteously, the CPU
must wait, thus resulting in slower access times. Cycle stealing is one
technique used to avoid this in single-ported video memory.
(1995-01-12)
Nearby terms:
Dual In-Line « Dual In-line Memory Module « Dual
In-Line Package « dual ported » dual-stack »
Dual Tone Multi Frequency » duck typing
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